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School of Materials Science and Chemistry Engineering, China University of Geosciences, Wuhan 430074, China

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Department of Minerals Processing, Wuhan Institute of Technology, Wuhan 430073, China

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Florida Industrial and Phosphate Research Institute, Florida Polytechnic University, Bartow, FL 33830, USA





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Author to whom correspondence should be addressed.



Academic Editor: Corby G. Anderson

Abstract The processing mineralogy characteristics of an oxidized lead-zinc ore from Sichuan were studied systematically using numerous modern instruments. Results showed that lead and zinc oxide content in the ore exceeded the minimum industrial grade, and also included a relatively high concentration of silver and iron. This ore is composed of many different minerals. Major zinc-containing minerals include sphalerite, hemimorphite, smithsonite, hydrozincite, zinc-containing baileychlore, and zinc-containing dolomite and calcite. Lead-containing minerals are primarily galena and cerussite with small amounts of dechenite, cesaronite, anglesite, limonite and coronadite. Gangue minerals include dolomite and calcite. Dissemination size for the main minerals ranges from medium 0.04 mm to fine 0.02 mm. All the valuable minerals are well liberated, including galena, sphalerite, cerussite, calamine, and smithsonite. However, the dissemination relationships are complex. Lead is concentrated mainly in galena and cerussite, while zinc occurs primarily in sphalerite, calamine, and smithsonite. The theoretical recovery for lead and zinc were estimated at 72% and 67%, respectively. View Full-Text

Keywords: oxidized lead-zinc ore; processing mineralogy; minerals compositions; dissemination characteristics; mode of occurrence oxidized lead-zinc ore; processing mineralogy; minerals compositions; dissemination characteristics; mode of occurrence





Autor: Mei Yang 1, Wending Xiao 2, Xiang Yang 1 and Patrick Zhang 3,*

Fuente: http://mdpi.com/



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